If you use the euro sign (€) frequently, you can add the Euro Style
button to the toolbar. For more information, see Customize toolbars and menus.

The regional settings for currency determine the position of the euro sign. The symbol can appear before or after the number, and there can be a space separating the symbol and the number. The regional settings also determine the decimal symbol and the thousands separator. You can control these settings by using the Mac OS X Language & Text system preferences.